$99 Free iOS app
Web, Mobile, Desktop
Principle uses a timeline interface giving the designer the flexibility to express experiences using motion. The flexibility of Principle's interface allows the user to create complex experiences in very short periods of time. Though you can create prototypes for web projects, the current focus of Principle is on mobile.
Principle is ideal for prototyping intricate motion design explorations for mobile and/or desktop applications. Prototypes are built using screens imported from Sketch or Photoshop. The imported elements are then manipulated within Principle to create a wide array of interactions.
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